Finally heard back from Purpleair.They confirm they do ship to the Uk and the mains supply works from 100-250 volts.Think I will hold fire on ordering one of their sensors though until I see a genuine first hand users review ...

Well... Im not that excited about this. As far as I can see it does not measure any gas concentrations only PP and for 250USD? Im also a bit suspicious about anything from WU based on previous experience.

What are the pros and cons of thinking about air pollution from a point of view of gas type concentration, or particles?

I have been wondering about pollution from nearby outdoor wood burning, so I think (?) particle detection alone might be interesting to me. The quality looks okay (possibly very good?), but, I am still concerned about the relatively high price too.

Looking at the map, it might be that some of the red areas are related to forrest and brush fires. I guess in the metro regions it might be industrial output and car exhaust on some days (smog).

They have gone from about 250 sensors to about 500 since we have been discussing this topic. Most of the concentration of sensor locations are still close to places they say have business centers.

But, there are still very few returns on Google. WU lists them on the main pages, but the new system does not integrate into WU, what's with that? What is the connection between purple air and WU, professional friends? A possible WU future acquisition trying to prove themselves worthy of acquisition?

Interesting to know.Taking a serious look at the purple air sensor.Would be nice if they supplied some widgets to use on my personal web page and not just their web site.Here in the Farmland of Michigan could provide some interesting information. Be even better if the EPA actually took note and made use of the FREE data.

I have sent several (Unanswered) Emails to Purple air. If they want us to support them it would help if they responded.I will probably get one of their sensors next week. My only reservation I would hate to buy one only to have them come out with one that also measures Ozone 2 weeks later (the usual luck of Bob)Has anyone else seen, or gotten any information from them in regards to adding Ozone detection?I see it mentioned on their web site, but I can not google any further information.

I have sent several (Unanswered) Emails to Purple air. If they want us to support them it would help if they responded. ...

Did you see Eno's post above, said only "support" worked, not "contact".

I'm still intrigued by them too, but the price point, lack of wider adoption, severe lack of communications, and unavailable models (weeks later, the SD version is still pre-order) has me on hold. However, their map is up to 600 reporting units today.

I ordered and paid for mine on the 13th of August. It was shipped on the 20th of September. The USPS tracking number provided by Adrionics was not identical to the one actually found below the USPS bar code, making it impossible to track the parcel. I was notified by mail on the 25th of October, that the sensor had finally cleared customs (Norway) and arrived at the local post office, ready to be picked up (as well as US$ 100 worth of duties to be paid).

My experiences this far:

The contact@ email address is not monitored (never had any responses from Adrionics).

The USPS tracking number provided by Adrionics was invalid.

The (apparent) link to the USPS tracking engine did not work.

Documentation is sparse (if any at all).

These are prototype products. The one-page documentation also states "Your sensor is a prototype (...)".

Setup for Weather Underground (etc.) requires input of "KEY1" and "KEY2". I can only assume that these are meant to be the WUnderground station ID and the WUnderground password (or possibly the station key?)

Neither the device itself nor the web-based interface provides any feedback on whether upload attempts to Weather Underground are successful.

The device also provides "local output" by means of HTTP requests (GET, PUT or POST) which can be directed to - say a Raspberry Pi. The JSON data set is not documented.

The temperature and humidity readings are way off and cannot be used for external applications.

The barometer readings seem to be reasonably accurate.

There are hints that the device is based on the Arduino (nothing wrong with that, just FYI).

The power supply comes with a US-type plug only (the power supply accepts 100-240 V AC, 50/60 Hz (slightly hard to read the specs)). No adapters provided, you're on your own if you're not anywhere near a US-type outlet. I guess most people can find a way around this, but it adds to the impression that this product just isn't ready for prime time quite yet.

The power supply seems to be reasonably weather proof (moulded inside the plastic case) but there is no documentation stating anything about weather proofing (or an IPx grade).

The mounting bracket has only one screw hole - at the top/above the sensor housing. There really should have been one more screw hole, placed below the sensor housing.

Summary: The edges are a bit rough. Much to be done in the documentation department. Price is way off the scale for a prototype product (did the WUnderground marketing actually state that they're pushing a prototype product?)

That explains many things.I have sent over 10 emails to both "Contact" and "Support"Never received a reply. Can not believe WU is trying to promote this if it is so not supported. Still going to hold off until there is one that also monitors ozone.

You are getting this message because you ordered a PurpleAir PA-II-SD air quality sensor.

There has been a delay caused by a version of the PCB (printed circuit board) that did not pass our design checks. We are working hard to fix this and the new PCB will be with us for testing in the next few days. After this we will need a bit more time for final testing and expect to start shipping SD version sensors around mid October.

Please note, that if you have WiFi with internet, the SD version is not necessary. This SD version is intended for remote locations without WiFi and internet access. All PurpleAir sensors will send data to the internet when a WiFi connection is available. You may download all your data from our cloud servers for your sensors and all other public sensors at any time.

If you prefer not to wait, we can change your order to the standard PA-II without the SD storage (available immediately), or offer you a full refund.

WOW,You received an answer from them. Better than I have done.I was really interested in getting one, but would rather wait for Ozone.Hopefully Purple air and WU will get their stuff together.

I did have communication from them about a month ago, but since then they have ignored all my emails. looks like they are having supply issues which in turn will effect revenue and staff levels. the longer they have issues the likelihood this is an adventure that is going wrong.

After a 1 month delay following purchase I received by USPS and then installed a PurpleAir brand air quality sensor (PA-II-SD) that as of today is uploading real-time data to Wunderground and www.purpleair.com

Purple Air finally got back to me after a couple weeks. The "Support" email worked whereas the "Contact" email did not.

Did they seem good? Are you buying one?

Wow that took a long time, ordered in early August, received in mid-November. But after an initial delay, email contact was pretty good, I got questions answered, I got updates.

It was pretty easy to mount and register, first one in SW Idaho. Boise.purpleair.com. Four days later another one popped up on the map across town. The nearest active EPA PM2.5 monitor is 7 miles west.

It seems very sensitive. At first it was mounted on a post on the far end of our patio. One small cigar smoked in the interior of the patio on a slightly breezy afternoon, I didn't even see any smoke going towards the monitor, but it spiked. Also thought it would be far enough from the grill, about 25 feet. We grilled just a few jalapeno poppers, again, smoke going up, but the monitor measured a spike again. We just moved it to a far south corner of the house under the eaves where there is better ventilation. It's probably about 100 feet from our fire pit, but I have a feeling next time we have a fire we'll generate some New Delhi-level measurements.

PM2.5 seems to drive the AQI. Probably in the summer ozone will come into play, but ozone seems more predictable: hot day, lots of sun, lots of cars, diurnal ozone pattern. I feel like with the monitor I'll get a better idea of how bad the winter inversions and summer wildfire smoke are.

Hoping someone here can help as Purple Air customer service is spotty.

I received my PAII today and got followed instructions and for several minutes during the setup in my room it was working just fine for a few minutes. Then I unplugged the sensor to move it to it's permanent spot outside. After installing the sensor and plugging it in again my PA pop-up window said that my sensor hadn't updated in an hour. Now it's 2 hours. I figured the house WiFi was weak in the spot I had it in so I moved it back inside in my room where it worked before and still it's not sending anymore

I know the sensor is still working because the red light under the dome is on and my phone is picking up it's WiFi signal and showing 5 bars. But the data is no longer streaming to Purple Air. It only worked for the first few minutes after I received the confirmation email.